1 F, 3 V rated — the energy buffer for short-duration hold-up
The KYOCERA AVX SCCR12E105PRB is a 1 F supercapacitor rated at 3 V, packaged in a radial can with PC pins for through-hole mounting. The 180 mOhm ESR at 1 kHz sets the charge/discharge efficiency ceiling — in a typical 3 V rail hold-up circuit, the internal resistance limits the instantaneous current draw to about 16.7 A before the voltage drop across the ESR equals the rated voltage, so the actual usable current is lower and depends on the load's tolerance for voltage sag.
Temperature and lifetime — the derating reality
Rated for 1000 hours at 60°C, the SCCR12E105PRB's lifetime halves for every 10°C rise above that temperature — a common rule for electrolytic and supercapacitor chemistries. The operating range of -40°C to 65°C means it functions in outdoor telecom cabinets or cold storage environments, but the 65°C ceiling is the absolute limit; sustained operation near that boundary accelerates the aging curve.